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Constraint on neutrino masses from SDSS-III/BOSS Ly alpha forest and other cosmological probes

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Measurement of the Atmospheric nu(e) Flux in IceCube

Matthias Wolf, Shirit Cohen, Mathieu Ribordy, Xiaoxia Bai

We report the first measurement of the atmospheric electron neutrino flux in the energy range between approximately 80 GeV and 6 TeV, using data recorded during the first year of operation of IceCube's DeepCore low-energy extension. Techniques to identify ...

Amer Physical Soc2013

GZK Neutrino Search with the IceCube Neutrino Observatory using New Cosmic Ray Background Rejection Methods

Shirit Cohen

Ultra high energy neutrinos are important astrophysical messengers that carry information on processes taking place in extreme astrophysical environments. The detection of neutrinos originating from the Greisen-Zatsepin-Kuzmin (GZK) process would confirm t ...

EPFL2013

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We report on searches for neutrino sources at energies above 200 GeV in the Northern sky of the Galactic plane, using the data collected by the South Pole neutrino telescope, IceCube, and AMANDA. The Galactic region considered in this work includes the loc ...

Iop Publishing Ltd2013

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We report on results of an all-sky search for high-energy neutrino events interacting within the IceCube neutrino detector conducted between May 2010 and May 2012. The search follows up on the previous detection of two PeV neutrino events, with improved se ...

Amer Assoc Advancement Science2013

Search for Dark Matter Annihilations in the Sun with the 79-String IceCube Detector

Matthias Wolf, Shirit Cohen, Mathieu Ribordy, Xiaoxia Bai

We have performed a search for muon neutrinos from dark matter annihilation in the center of the Sun with the 79-string configuration of the IceCube neutrino telescope. For the first time, the DeepCore subarray is included in the analysis, lowering the ene ...

American Physical Society2013

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We report on the observation of two neutrino-induced events which have an estimated deposited energy in the IceCube detector of 1.04 +/- 0.16 and 1.14 +/- 0.17 PeV, respectively, the highest neutrino energies observed so far. These events are consistent wi ...

American Physical Society2013

Measurement of the cosmic ray energy spectrum with IceTop-73

Matthias Wolf, Shirit Cohen, Sofia Vallecorsa, Mathieu Ribordy, Xiaoxia Bai

We report on the measurement of the all-particle cosmic ray energy spectrum with the IceTop air shower array in the energy range from 1.58 PeV to 1.26 EeV. The IceTop air shower array is the surface component of the IceCube Neutrino Observatory at the geog ...

Amer Physical Soc2013

Neutrino Mass from Cosmology

Julien Lesgourgues

Neutrinos can play an important role in the evolution of the universe, modifying some of the cosmological observables. In this contribution we summarize the main aspects of cosmological relic neutrinos, and we describe how the precision of present cosmolog ...

Hindawi Publishing Corporation2012

Cosmological lepton asymmetry with a nonzero mixing angle theta(13)

Julien Lesgourgues

While the baryon asymmetry of the Universe is nowadays well measured by cosmological observations, the bounds on the lepton asymmetry in the form of neutrinos are still significantly weaker. We place limits on the relic neutrino asymmetries using some of t ...

2012

Neutrino Analysis Of The 2010 September Crab Nebula Flare And Time-Integrated Constraints On Neutrino Emission From The Crab Using Icecube

Matthias Wolf, Shirit Cohen, Mathieu Ribordy, Xiaoxia Bai

We present the results of a search for high-energy muon neutrinos with the IceCube detector in coincidence with the Crab Nebula flare reported on 2010 September by various experiments. Due to the unusual flaring state of the otherwise steady source we perf ...

2012